The Dual Fuel Open Frame Inverter 4500W Electric Start With CO Alert from FIRMAN Power Equipment boasts yellow accents and a user-friendly control panel, making it ideal for those on the move. Known for its clean power and fuel-efficient performance, large wheels ensure easy mobility.
Graphic of the FIRMAN Power Equipment Dual Fuel Open Frame Inverter 4500W Electric Start with CO Alert showcasing its features: 4500 starting watts, 3650 running watts, and a fuel-efficient 6.0-gallon tank. Experience an impressive 18-hour runtime at 50% load powered by a robust 208cc engine with carbon monoxide shutdown functionality. This portable inverter generator offers clean power output and is backed by a 3-year warranty.
Image showing included items for the FIRMAN Power Equipment Dual Fuel Open Frame Inverter 4500W Electric Start With CO Alert: tool kit, wheels, U-shaped handle, regulator hose, engine oil, oil funnel, parallel cable, charger cable, and battery. This device is fuel-efficient and ensures clean power with every use.
A Dual Fuel Open Frame Inverter 4500W Electric Start with CO Alert by FIRMAN Power Equipment is placed on the gravel surface in the foreground, while a person in the background uses a table saw outdoors, benefiting from clean power for their project.
A person adjusting the fuel-efficient FIRMAN Power Equipment's Dual Fuel Open Frame Inverter 4500W Electric Start with CO Alert, which is yellow and portable, on a paved surface in front of a house.
The FIRMAN Power Equipment Dual Fuel Open Frame Inverter 4500W Electric Start with CO Alert, in a distinctive yellow and black design, features a user-friendly control panel, multiple outlets, convenient handles, and sturdy wheels. This fuel-efficient model provides reliable clean power wherever you need it.
The control panel of the FIRMAN Power Equipment Dual Fuel Open Frame Inverter 4500W Electric Start with CO Alert features an array of outlets, switches, and labels. It is equipped with USB ports, voltage indicators, and carbon monoxide shutdown information. This fuel-efficient unit guarantees clean power delivery for all your needs.
FIRMAN Power Equipment's Dual Fuel Open Frame Inverter 4500W Electric Start with CO Alert is shown on a yellow background, featuring bonus items such as an L5-30P to TT-30R adapter and hose holder. Renowned for its fuel efficiency, it delivers clean power wherever needed.
The patio features a Dual Fuel Open Frame Inverter 4500W Electric Start with CO Alert by FIRMAN Power Equipment. This generator, equipped with wheels, a control panel, and an attached hose, is surrounded by user manuals, an oil container, and assembly tools. Its fuel-efficient design provides clean power against the scenic backdrop of trees and a nearby building.
A FIRMAN Power Equipment DUAL FUEL OPEN FRAME INVERTER 4500W ELECTRIC START WITH CO ALERT with a yellow and black design sits on a grassy lawn, set against the backdrop of a wooden building with a red roof and lush greenery. This fuel-efficient machine ensures clean power for all your needs.
Front view of a FIRMAN Power Equipment DUAL FUEL OPEN FRAME INVERTER 4500W ELECTRIC START WITH CO ALERT with a yellow and black design, displaying its specifications: 4200 starting watts, 3650 running watts, 3800 peak watts, and 3300 rated watts. This fuel-efficient model ensures clean power for all your needs.
A DUAL FUEL OPEN FRAME INVERTER 4500W ELECTRIC START WITH CO ALERT with the brand name FIRMAN Power Equipment, model W03662OF, featuring a yellow top cover, black frame, and two large yellow wheels for mobility. This fuel-efficient unit ensures clean power wherever you go.
A fuel-efficient portable inverter generator with a yellow and black casing is marked "208cc" and "FIRMAN Power Equipment," featuring wheels for mobility. This product is the DUAL FUEL OPEN FRAME INVERTER 4500W ELECTRIC START WITH CO ALERT.
A yellow, black, and gray FIRMAN Power Equipment DUAL FUEL OPEN FRAME INVERTER 4500W ELECTRIC START WITH CO ALERT portable inverter generator with a control panel, fuel gauge, dual fuel capability, and dual wheel design for easy transportation.
A fuel-efficient portable generator with a yellow and black design, labeled FIRMAN Power Equipment. This DUAL FUEL OPEN FRAME INVERTER 4500W ELECTRIC START WITH CO ALERT features multiple outlets, a control panel, and large wheels for mobility, providing clean power on the go.
A yellow and black portable FIRMAN Power Equipment DUAL FUEL OPEN FRAME INVERTER 4500W ELECTRIC START WITH CO ALERT, known for its clean power and fuel-efficient performance, featuring two wheels and a handle for easy transport.
A portable, fuel-efficient FIRMAN Power Equipment DUAL FUEL OPEN FRAME INVERTER 4500W ELECTRIC START WITH CO ALERT is positioned on snowy ground, with wooden posts visible in the background.
A yellow and black FIRMAN Power Equipment DUAL FUEL OPEN FRAME INVERTER 4500W ELECTRIC START WITH CO ALERT with dimensions 24.1 inches in length, 23.0 inches in height, and 21.0 inches in width, offering clean power and fuel-efficient performance.
The Dual Fuel Open Frame Inverter 4500W Electric Start With CO Alert from FIRMAN Power Equipment boasts yellow accents and a user-friendly control panel, making it ideal for those on the move. Known for its clean power and fuel-efficient performance, large wheels ensure easy mobility.
Graphic of the FIRMAN Power Equipment Dual Fuel Open Frame Inverter 4500W Electric Start with CO Alert showcasing its features: 4500 starting watts, 3650 running watts, and a fuel-efficient 6.0-gallon tank. Experience an impressive 18-hour runtime at 50% load powered by a robust 208cc engine with carbon monoxide shutdown functionality. This portable inverter generator offers clean power output and is backed by a 3-year warranty.
Image showing included items for the FIRMAN Power Equipment Dual Fuel Open Frame Inverter 4500W Electric Start With CO Alert: tool kit, wheels, U-shaped handle, regulator hose, engine oil, oil funnel, parallel cable, charger cable, and battery. This device is fuel-efficient and ensures clean power with every use.
A Dual Fuel Open Frame Inverter 4500W Electric Start with CO Alert by FIRMAN Power Equipment is placed on the gravel surface in the foreground, while a person in the background uses a table saw outdoors, benefiting from clean power for their project.
A person adjusting the fuel-efficient FIRMAN Power Equipment's Dual Fuel Open Frame Inverter 4500W Electric Start with CO Alert, which is yellow and portable, on a paved surface in front of a house.
The FIRMAN Power Equipment Dual Fuel Open Frame Inverter 4500W Electric Start with CO Alert, in a distinctive yellow and black design, features a user-friendly control panel, multiple outlets, convenient handles, and sturdy wheels. This fuel-efficient model provides reliable clean power wherever you need it.
The control panel of the FIRMAN Power Equipment Dual Fuel Open Frame Inverter 4500W Electric Start with CO Alert features an array of outlets, switches, and labels. It is equipped with USB ports, voltage indicators, and carbon monoxide shutdown information. This fuel-efficient unit guarantees clean power delivery for all your needs.
FIRMAN Power Equipment's Dual Fuel Open Frame Inverter 4500W Electric Start with CO Alert is shown on a yellow background, featuring bonus items such as an L5-30P to TT-30R adapter and hose holder. Renowned for its fuel efficiency, it delivers clean power wherever needed.
The patio features a Dual Fuel Open Frame Inverter 4500W Electric Start with CO Alert by FIRMAN Power Equipment. This generator, equipped with wheels, a control panel, and an attached hose, is surrounded by user manuals, an oil container, and assembly tools. Its fuel-efficient design provides clean power against the scenic backdrop of trees and a nearby building.
A FIRMAN Power Equipment DUAL FUEL OPEN FRAME INVERTER 4500W ELECTRIC START WITH CO ALERT with a yellow and black design sits on a grassy lawn, set against the backdrop of a wooden building with a red roof and lush greenery. This fuel-efficient machine ensures clean power for all your needs.
Front view of a FIRMAN Power Equipment DUAL FUEL OPEN FRAME INVERTER 4500W ELECTRIC START WITH CO ALERT with a yellow and black design, displaying its specifications: 4200 starting watts, 3650 running watts, 3800 peak watts, and 3300 rated watts. This fuel-efficient model ensures clean power for all your needs.
A DUAL FUEL OPEN FRAME INVERTER 4500W ELECTRIC START WITH CO ALERT with the brand name FIRMAN Power Equipment, model W03662OF, featuring a yellow top cover, black frame, and two large yellow wheels for mobility. This fuel-efficient unit ensures clean power wherever you go.
A fuel-efficient portable inverter generator with a yellow and black casing is marked "208cc" and "FIRMAN Power Equipment," featuring wheels for mobility. This product is the DUAL FUEL OPEN FRAME INVERTER 4500W ELECTRIC START WITH CO ALERT.
A yellow, black, and gray FIRMAN Power Equipment DUAL FUEL OPEN FRAME INVERTER 4500W ELECTRIC START WITH CO ALERT portable inverter generator with a control panel, fuel gauge, dual fuel capability, and dual wheel design for easy transportation.
A fuel-efficient portable generator with a yellow and black design, labeled FIRMAN Power Equipment. This DUAL FUEL OPEN FRAME INVERTER 4500W ELECTRIC START WITH CO ALERT features multiple outlets, a control panel, and large wheels for mobility, providing clean power on the go.
A yellow and black portable FIRMAN Power Equipment DUAL FUEL OPEN FRAME INVERTER 4500W ELECTRIC START WITH CO ALERT, known for its clean power and fuel-efficient performance, featuring two wheels and a handle for easy transport.
A portable, fuel-efficient FIRMAN Power Equipment DUAL FUEL OPEN FRAME INVERTER 4500W ELECTRIC START WITH CO ALERT is positioned on snowy ground, with wooden posts visible in the background.
A yellow and black FIRMAN Power Equipment DUAL FUEL OPEN FRAME INVERTER 4500W ELECTRIC START WITH CO ALERT with dimensions 24.1 inches in length, 23.0 inches in height, and 21.0 inches in width, offering clean power and fuel-efficient performance.
01/01
Certification: Certification cETL Certification EPA
Model: wh03662of

Dual Fuel Open Frame Inverter 4500W Electric Start With CO Alert
$799.99 USD
Free Shipping on all Generators
SERIES Inverter,Hybrid
TYPE Open Frame Inverter

Fuel-efficient and longer run time is a powerful combo at FIRMAN. Running on both gasoline and propane for the best of both worlds.

The FIRMAN WH03662OF portable inverter generator provides clean power for electronics and sensitive equipment. Whatever your needs might be — whether for a family camping trip, an off-grid cabin, or your job site — this generator is ready to work. Includes a 50Amps outlet.

You can trust FIRMAN to give you a hand when you need it most.

The WH03662OF comes with an engine oil bottle, oil funnel, spark plug wrench, a double open-ended wrench (10mm,12mm), 12V battery cable, LPG regulator with hose holder, adaptor, parallel cable and holder.

**This product is not certified to ship to California.

LEGENDARY FIRMAN ENGINEERING

  • 208cc engine
  • Recoil start 
  • Electric start 
  • Low oil shut off
  • Cast iron sleeve
  • Running watts 3650W (GAS), 3300W (LPG)
  • Starting watts 4500W (GAS), 4100 (LPG)
  • 120 volts


PERFORMANCE IN A LEAGUE OF ITS OWN

  • Up to 25 hours of runtime at 25% load
  • 6-gallon tank
  • Weight: 119 lbs
  • 67dB ¼ load


FEATURES YOU EXPECT FROM FIRMAN

3-year warranty

Multi-featured control panel with covered outlets

  • 1 x 5-20R 120V 20A DUPLEX

  • 1 x L5-30R 120V 30A TWIST LOCK

  • 1 x 14-50R 120V 50A

ENGINEERED IN THE USA

FIRMAN generators are made to endure every condition from cold winter nights to hot summer days to everything in between.

Industry-Leading Warranty

New FIRMAN generators are backed by a 3-year warranty. Refurbished generators have a limited 90 day warranty

Customer Support

Our skilled technicians located in Peoria, AZ are available 7 days a week to provide the support you need when you need it most. 

Running Watts

3650 Gas / 3300 LPG

Starting Watts

4500 Gas / 4100 LPG

208cc

FIRMAN Engine

6 Gallon Gas Tank

22 Hr Run Time

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Manuals

WH03662OF Quick Start / Stop Guide (Spanish)

download

WH03662OF Quick Start / Stop Guide (French)

download

WH03662OF Quick Start / Stop Guide (English)

download

WH03662OF Manual Spanish

download

WH03662OF Manual French

download

WH03662OF Manual English

download

Watch

CO Alert Overview

Watch

WH03662OF Overview

Watch

WH03662OF Maintenance

Watch

WH03662OF Unboxing

@FIRMANpowerequipment
Image of a Woman holding a handle to an Inverter Generator and walking towards a pick up truck and trailer cart.
An image of a woman uncovering her FIRMAN Generator that is on her truck bed.
A man shows off his FIRMAN Accessories and Inverter Generator collection.
Image of a woman lifting her FIRMAN Inverter Generator with it's U-Shaped Handle
Image of a man holding a cup of coffee in the woods with a FIRMAN Power Generator that is connected to a power cord.
A FIRMAN generator is sitting on the bed of a white pick up truck. The truck is parked against a concrete wall.
Image of a small dog and a FIRMAN Inverter Generator with a suitcase handle, outside on a camping ground.
Image of a man sitting on FIRMAN Power Generator boxes and holding a small Inverter generator.